Unit 4: Cell Communication and Cell Cycle

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Presentation slides, Body systems

Apr 23 2020

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Body Systems and Cell Signalling Trivia

Come and test your knowledge with 25 questions!

Apr 22 2020

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A good way to remember the importance of regulation in cell communication and the cell cycle is to think of a checklist. In order for these processes to be done correctly, there must be correct timing and coordination within the cell.

4.0 Unit 4 Overview: Cell Communication and Cell Cycle

1 min read

54:34

Feedback Mechanisms and the Cell Cycle

A look at positive and negative feedback with examples, as well as a review of the cell cycle and its regulation.

Jan 30 2020

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Browse slides from the stream 'Cell Communication.'

Cell Communication - Slides

Nov 21 2019

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42:46

Cell Communication

Review of the various methods used by cells in order to communicate.

Nov 21 2019

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42:11

Endocrine System

The endocrine system regulates growth, metabolism, sexual development, and homeostasis to allow our bodies to thrive.

Mar 1 2019

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Browse slides from the stream 'Endocrine System,' where we cover topics including Systems.

Endocrine System - Slides

Mar 1 2019

39:53

Nervous System

In this stream, we'll discuss the nervous system, including key components and processes.

Feb 20 2019

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Browse slides from the stream 'Nervous System,' where we cover topics including Cellular Processes, and Cell Signaling.

Nervous System - Slides

Feb 20 2019

Browse slides from the stream 'Immune System.'

Immune System - Slides

Feb 13 2019

52:45

Immune System

In this lesson, we'll discuss the immune system, including key players and processes.

Feb 13 2019

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43:12

Mitosis & Meiosis

In this session, we'll compare and contrast mitosis and meiosis and analyze their purposes in organisms and reproduction.

Dec 13 2018

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Browse slides from the stream 'Mitosis & Meiosis,' where we cover topics including DNA & Genetics, Cellular Processes, and Systems.

Mitosis & Meiosis - Slides

Dec 13 2018

51:20

Abiotic Signaling

We'll discuss the non-living signals of plants, including phototropism, ripening, and photoperiodism.

Nov 8 2018

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Browse slides from the stream 'Abiotic Signaling,' where we cover topics including Systems, Cell Signaling, and Cellular Processes.

Abiotic Signaling - Slides

Nov 8 2018

47:10

Cell Signaling

In this session, we cover cell signaling, or how cells “talk."

Oct 25 2018

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Browse slides from the stream 'Cell Signaling,' where we cover topics including Information, Systems, and Cellular Structure.

Cell Signaling - Slides

Oct 25 2018

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The cells in your body communicate in many different ways. Cells must communicate with each other and the environment in order to complete tasks. They communicate through chemical signals. These signals are usually proteins. Multicellular organisms have trillions of cells that communicate in the following ways.

4.1 Cell Communication

Transduction is the conversion of a signal into a cellular response. Transduction occurs in one step but the majority of the time it takes multiple changes.

4.2 Introduction to Signal Transduction

3 min read

As we talked about earlier, cells communicate and respond to changes in the environment. The environment also has the ability to influence cells in order to elicit a response.

4.3 Signal Transduction

1 min read

Changes to any structure in the cell cycle can affect the signal transduction pathway. As we talked about earlier, the signal transduction pathway has the ability to alter cellular processes. Specifically, mutations can lead to detrimental effects on later responses.

4.4 Changes in Signal Transduction Pathways

1 min read

Based upon the environment around the organism, the timing, and coordination, there can be either a positive or negative feedback. Organisms use feedback to maintain homeostasis as well as respond to the environment.

4.5 Feedback

The cell cycle is the sequence of steps prior to cell division. In eukaryotic cells, the cell cycle is highly regulated through the growth and reproduction of cells. The cell cycle consists of 5 phases: interphase (G1, S, and G2), mitosis, and cytokinesis.

4.6 Cell Cycle

Mistakes in duplication can lead to mutations that can lead to cells being abnormal. Because of this, cell cycle checkpoints are done.

4.7 Regulation of Cell Cycle